3. Is there a ban on corporate donations to political parties?

Political Organizations Law: article 31c                                                                 

"Artículo 31º.- Fuentes de financiamiento prohibidas
Las organizaciones políticas no pueden recibir aportes de ningún tipo provenientes de: (...)
c) Personas jurídicas con fines de lucro, nacionales o extranjeras. (...)".

Political Organizations Law: article 31c                                                                                                                                

"Article 31.- Banned sources of funding                                                                   

Political organizations cannot receive contributions of any type with origin of: (...)    

c ) Legal persons with lucrative purposes, national or foreign. (...).

Legal persons with lucrative purposes (corporate) are banned on donations.